An elevation is different. It shows the face of something, or perhaps more correct, the projection of an object/s to a plane. But my testing suggests it produces SECTIONS, not elevations.
Yes, you can use abbreviations in tables and figures. All abbreviations used in tables and figures should be defined in the table note or figure caption, respectively, even though the abbreviations will be also be defined in the text if they are used there.
or Arabic figure. 1. one of the characters 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, in general European use since the 12th century. The press-marks consist of a capital letter and an Arabic numeral (A. 130). Arabic numeral.